[32-bit Linux] Align _GenericContext to 8 bytes
[32-bit Linux] Align _GenericContext to 8 bytes

A static assert fires around GenericContext not quite being the correct size for 32-bit. Aligning _GenericContext addresses this problem.

swift/include/swift/AST/Decl.h:
 1541  static_assert(sizeof(_GenericContext) + sizeof(DeclContext) ==
 1542:               sizeof(GenericContext), "Please add fields to _GenericContext");

xedin/swift,allevato/swift,karwa/swift,gregomni/swift,harlanhaskins/swift,sschiau/swift,allevato/swift,gribozavr/swift,nathawes/swift,amraboelela/swift,gribozavr/swift,ahoppen/swift,gregomni/swift,xwu/swift,stephentyrone/swift,shahmishal/swift,shahmishal/swift,airspeedswift/swift,gregomni/swift,ahoppen/swift,xwu/swift,gribozavr/swift,atrick/swift,danielmartin/swift,lorentey/swift,airspeedswift/swift,xwu/swift,tkremenek/swift,sschiau/swift,tkremenek/swift,glessard/swift,allevato/swift,devincoughlin/swift,shahmishal/swift,devincoughlin/swift,jmgc/swift,ahoppen/swift,parkera/swift,CodaFi/swift,benlangmuir/swift,JGiola/swift,austinzheng/swift,glessard/swift,shajrawi/swift,tkremenek/swift,danielmartin/swift,jckarter/swift,parkera/swift,shahmishal/swift,stephentyrone/swift,benlangmuir/swift,aschwaighofer/swift,apple/swift,brentdax/swift,devincoughlin/swift,tkremenek/swift,atrick/swift,shajrawi/swift,ahoppen/swift,benlangmuir/swift,ahoppen/swift,benlangmuir/swift,rudkx/swift,xwu/swift,parkera/swift,amraboelela/swift,xedin/swift,apple/swift,lorentey/swift,xwu/swift,roambotics/swift,xedin/swift,gregomni/swift,practicalswift/swift,harlanhaskins/swift,danielmartin/swift,aschwaighofer/swift,atrick/swift,xedin/swift,allevato/swift,sschiau/swift,JGiola/swift,brentdax/swift,glessard/swift,allevato/swift,karwa/swift,practicalswift/swift,austinzheng/swift,jckarter/swift,glessard/swift,amraboelela/swift,brentdax/swift,tkremenek/swift,jckarter/swift,alblue/swift,jmgc/swift,harlanhaskins/swift,jckarter/swift,lorentey/swift,gregomni/swift,harlanhaskins/swift,karwa/swift,hooman/swift,austinzheng/swift,parkera/swift,devincoughlin/swift,hooman/swift,alblue/swift,austinzheng/swift,lorentey/swift,xwu/swift,JGiola/swift,shajrawi/swift,aschwaighofer/swift,gribozavr/swift,harlanhaskins/swift,JGiola/swift,devincoughlin/swift,airspeedswift/swift,parkera/swift,austinzheng/swift,CodaFi/swift,CodaFi/swift,austinzheng/swift,jckarter/swift,alblue/swift,roambotics/swift,shajrawi/swift,practicalswift/swift,rudkx/swift,alblue/swift,sschiau/swift,jckarter/swift,practicalswift/swift,karwa/swift,roambotics/swift,aschwaighofer/swift,CodaFi/swift,nathawes/swift,hooman/swift,danielmartin/swift,apple/swift,lorentey/swift,shajrawi/swift,nathawes/swift,sschiau/swift,danielmartin/swift,shahmishal/swift,gribozavr/swift,benlangmuir/swift,karwa/swift,jmgc/swift,atrick/swift,nathawes/swift,hooman/swift,CodaFi/swift,lorentey/swift,CodaFi/swift,tkremenek/swift,tkremenek/swift,airspeedswift/swift,rudkx/swift,apple/swift,brentdax/swift,austinzheng/swift,aschwaighofer/swift,harlanhaskins/swift,rudkx/swift,nathawes/swift,danielmartin/swift,JGiola/swift,karwa/swift,amraboelela/swift,rudkx/swift,jmgc/swift,alblue/swift,practicalswift/swift,alblue/swift,amraboelela/swift,amraboelela/swift,aschwaighofer/swift,lorentey/swift,jckarter/swift,hooman/swift,airspeedswift/swift,sschiau/swift,practicalswift/swift,hooman/swift,nathawes/swift,glessard/swift,stephentyrone/swift,stephentyrone/swift,shahmishal/swift,CodaFi/swift,brentdax/swift,nathawes/swift,stephentyrone/swift,alblue/swift,atrick/swift,practicalswift/swift,shajrawi/swift,parkera/swift,shajrawi/swift,jmgc/swift,harlanhaskins/swift,allevato/swift,stephentyrone/swift,gregomni/swift,lorentey/swift,atrick/swift,devincoughlin/swift,xedin/swift,airspeedswift/swift,jmgc/swift,shahmishal/swift,amraboelela/swift,roambotics/swift,apple/swift,roambotics/swift,parkera/swift,xedin/swift,devincoughlin/swift,allevato/swift,shahmishal/swift,gribozavr/swift,devincoughlin/swift,stephentyrone/swift,xedin/swift,parkera/swift,gribozavr/swift,karwa/swift,sschiau/swift,airspeedswift/swift,aschwaighofer/swift,karwa/swift,glessard/swift,brentdax/swift,ahoppen/swift,brentdax/swift,gribozavr/swift,xedin/swift,hooman/swift,benlangmuir/swift,rudkx/swift,roambotics/swift,danielmartin/swift,JGiola/swift,practicalswift/swift,apple/swift,xwu/swift,shajrawi/swift,sschiau/swift,jmgc/swift